Antiskidding tire.



G. J. ADAM.

ANTISKIDDING TIRE. APPLICATION FILED 0011s, 1909.

1,014,357. v Patented Ja.11.9, 1912.

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JUGZZZF G. J. ADAM. ANTISKIDDING TIRE.

APPLIOATIONIILED 0013.18, 1909. I

1,014,357, Patented Jan. 9, 1912.

I 2 SHEETSSHEET 2.

(@117 50135: I I6 I r/ @302" f/fiidflW J v g GEORGE J'. ADAM, OF CHICAGO, ILLINOIS.

ANTISKIDZDING Tr m.

To all whom it may concern:

Be itknown that I, GEORGE J. ADAM, a citizen of the United States, and a, resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and "useful Improvements in Antiskidding Tires;

and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the .accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. p

This invention relates'to improvements in anti-sln'dding tread devices for yielding tires, such as pneumatic cushion or soft rubber tires, and particularly to improvements -in that type of such devices in which tough,

non-metallic, flexible pads, such as leather pads, are provided for producing friction between the tire and the road.

The invention consists of a. novel construction for attaching the pads to the tread of the tire, arranged to permit of the ready detachment of the pad when it becomes Worn, and the substitution in its place of a new pad.

The various advantages of my improvement will appear as I proceed with my specification.

The invention consists in the combination of parts hereinafter described and more particularly pointed out in the appended claims.

In the drawings :-Figure 1 is a side elevation of a portion of a tire having'pads of one form attached to it in accordance with my invention. Fig. 2 is a top plan View of the same. Fig. 3 1s a cross-section through the tire on the line 3 3 of Fig. 1. Fig. 4: is a similar cross-section illustrating I a slightly modified form. Fig. 5 is a bottomplan view of the rear wheels of an automobile showing a different type of pad. Fig. 6 is a side elevation of a portion of a tire provided with the pads illustrated in Fig. 5, with the pads attachedin accordance with my invention. Fig. 7 is a cross-section through Fig.6 on the line 7- 7 thereof. Fig.

8 is a similar section showing a modified form of tire.

' Referring now to that form of my invention illustrated in Figs. 1 to 3, A represents the tire, and B, the anti-skidding tread devices. Each anti-skidding tread device B consists of a pad that is made of leather, or of any other suitable non-metallic, tough,

Specification of Letters Patent.

Application filed October 18, 1909.

Serial No. 523,309.

flexible material which tends to induce fric- Patented Jan. 9,1912.

tion. The pads are arranged symmetrically about the tread of the tire. In the figures referred to these pads are in the form of an X.

0 indicates a groove or channel formed in the outer tread surface of the tire of a shape to receive the pads B. Said channels extend about the sides of the tire and at their ends are formed laterally extended portions C preferably of symmetric form, which are adapted to receive similarly extended portions B provided at the ends of the X- shaped pads. The channel C is of a less depth than the thickness of the pads B so that the pads, when in position in the chan nels, project beyond the surface of the tread. About the laterally extended portions C of the channel are preferably formed shoulders c c on the tire surface, which shoulders in.- crease the depth of the widened portions C of the channels so that the laterally extended ends of the pad lie completely Within the channel.

The ends of the pads are anchored by means of bolts D having enlarged flat heads D which are anchored in the body of the tire fabric. Said bolts-are located at the ends of the channels with their shanks d projecting outwardly a sufficient distance for them to pass through the ends of the pad and to receive a locking head E. Said head is in the form of a cap which fits over the end of the shank d and carries a set screw 6 which engages in a notch al formed in the said shank; -'-By withdrawing the setscrew e a short distance, the cap may be removed from the end of the shank and the 'end of the pad disengagedtherefrom. It will be noted that it is unnecessary to completely remove the set-screw, which is an advantage in that the screw is not likely to be lost. v

The pull on the pad is taken up by the side walls of thechannel O at the laterally extended part C thereof, supplemented by the raised shoulders c 0 formed onthe surface of the tire. As illustrated in'Fig. 3, the head D of the bolt D is located within the tire fabric itself. In Fig. 4 the said head is shown located between the inner wall of the outer tire and the outer wall of the inner tube F, as indicated at d.

In Figs. 5 to 7 there is shown a pad of different form. The pads here illustrated comprise single lengths of antiskidding fabric G provided at their pip osite ends, as before, with laterally exten ed portions G each pad being attached so as to run at an angle with the tread, with-one end attached on one side of the tire and the other on th opposite side of the tire. Said pads are attached as before,-K indicatin the channels, K the laterally extended c v annel ends inwhichare located the laterall extended ends G of the. pads, Ithe bolt with its head I" located in the fabric of the tire and t the retaining cap. With an anti-skidding pad of this type, 1t is preferable to arrange the pads on the tires with the pads on one tire at an angleto those on the o osite tire, as illustrated-in Fig. 5. With t is arrangement practically the same efl'ect is obtained with the straight ads illustrated in Figs. 5 and 7, as by the hsllaped pads illustrated in Figs. 1 to 3.. d

In some cases it is preferable to form an outer tread covering S of rubber or other suitable material as shown in Fig. 8, which skidding not limited to any form the depth'of said channels is adapted to be sprpng upon the tire such case the channels are formed in said outer tread covering and the pads attached as before. In this case the heads U of the bolts U are arranged to lie between the inner face of said outer covering and the outer face of the tire.

My-improved construction for attaching antiskiddmg pads, as will be a parent, is of pad ut may be adapted for use with pads of forms other than. those shown, it being simply necessary to form the channels in the tire or in the outer tread coverin in the case of the use of such coverin o' a shape to receive and hold the ad. %he details herein shownand describe may be variously modified w1thout, departing from the spirit of my mvention.

I claim as my invention 1. An anti-skidding tread device for tires comprising, in combination with a tire having an outer treadsurface provided with open channels running across the tread-and extending about the sides of the tir ,jant pads of tough, n on-metall1c flexible material confined. in said channels, the thickness of said pads being greaterjthan and said ads and channels being laterally extende at their ends.

T. In

2. Ananti skidding tread device for tires comprising, in combination with-anti-skidding pads, a tire having an outer tread surface provided with open channels running across the trend and extending about the sides of the tire, said channels bein ada ted to receive the pads and having wa ls a apted to engage the marginal-edges of the pads, and bolts anchored to thetire ada ted to anchor the ends of said pads within t e ends of said channels, said bolts being rovided with detachable caps to engage t e outer surface of the ads.

3. An anti-s idding tread device for tires comprising, in combination with anti-skiddingl pads. rovided with lateral extensions at t eir en s, a .tire having an outer tread surface provided with channels running across the tread and extending about the sidesof the tires, said channels being-conformed to receive the pads and being laterally extended at their ends to receive the lateral extensions of said pads with the walls ofthe channels in en agement with the marginal edges of the pa s, the channels at the end being of a depth substantially equal to the pads, and means for detachably' securing the ends of said pads within the channels. v

4. An anti-skidding tread device for tires comprising, 'in combinationwith anti-skidding pads, a tire having an outer tread surface provided with open channels running.

across the tread. and extending about the sides of the tire, said channels bein' adapted to receive the pads to engage the marginal ed es of the pads, bolts anchored to the tire a apted the ends of said pads within the ends of said channels, said bolts havin' notched shanks adapted to face of the ads, and caps adapted to fit and having wa s adapted to anchor project beyon the surthe ends of t e bolt shanks, said caps being I provided with lockin to en age said notched s n testimony that I, Gaonen- J. ADAM, claim the foregoing as my own invention I aflix my si nature in the re'sence of two witnesses, t 1909.

means adapted ank.

' Witnesses:

G. W. Bnaomnunr, FRANK N.

is first day Q October A. D.

GEORG J. ADAM. 

